Circular-saw guard.



No. 866,508. PATENTED SEPT. 17, 1907. M. P. OREGAN. CIRCULAR SAW GUARD.

APPLICATION FILED JULY 6, 1907.

2 SHEETS-SHEET 1.

flue-(M No. 866,508. PATENTED SEPT. 17, 1907. M. P. OREGAN.

CIRCULAR SAW GUARD.

APPLICATION FILED JULYG, 1907.

2 SHEETS-SHEET 2.

MAURICE P. OREGAN, OF DOROI-IESTER, IOWA.

CIRCULAR-SAW GUARD.

Specification of Letters Patent.

Patented Sept. 17, 1907.

Application filed July 6,1907. Serial No. 382,479.

To all whom it may concern:

Be it known that I, MAURICE P. OREGAN, a citizen of the United States,residing at Dorchester, in the county of Allamakee, State of Iowa, haveinvented certain new and useful Improvements in Circular-Saw Guards; andI do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

The present invention has reference to circular saw guards, and it aimsto provide a device of that nature which is designed-to partially incasethe saw-teeth, and thus prevent injury to the operator.

The invention further aims to provide a circular saw-guard comprising anupper and a lower section hinged together at their rear ends andremovably connected with the frame upon which the saw is mounted, theupper section. of the guard being in turn, formed by a pair of membershinged together and held in place by a leaf-spring, the front member ofsuch upper section being thus rendered capable of being raised when alog of wood of extra thickness is fed to the saw by the carrier, and ofreturning automatically to its normal position when the log has beencut.

With the above and other ends in view, the invention consists in theconstruction, combination, and arrangement of parts, all as hereinaftermore fully described, specifically claimed, and illustrated in theaccompanying drawings, in which like parts are desig nated bycorresponding reference numerals in the several views, 7

Of the said drawings, Figure 1 is a side elevation of the presentinvention applied to a circular saw, Fig. 2 is an end view thereof, Fig.3 is a vertical section through Fig. 1. Fig. 4 is a perspective view ofthe guard detached from the saw table, Fig. 5 is a detail perspectiveView of the member which carries the guard fingers.

Referringmore particularly to the drawings the numeral 7 designates asaw table of any conventional type against which is disposed a circularsaw 8 mounted upon the projecting end of a shaft 9, which is journaledin brackets secured to the under face of the table, and is driven fromany source of power. The extremity of said shaft fits in a bearingformed in the upper end, or apex, of each member of a triangular frame10 to which the saw-guard, which incases the saw, is attached, the sawand its guard being disposed between the members of the frame, as shown.The saw-guard comprises an arcuate upper section 11, and a lower section12, of similar shape, which sections are hinged together at their rearends, the hingebolt passing through the rearwardly projecting ears 13formed on said sections, and through the flange formed onthe adjacentleg of the corresponding frame member, which members are constructed ofangle-iron.

The lower section of the guard consists of a pair of aliningsemi-circular plates which are arranged in spaced relation to eachother, to provide an opening therebetween into which the'sawextends, theformation of such opening also permitting the saw-dust to fall into theusual trough. The plates which form the lower section of the guard arefurther provided with perforated depending legs l l'through which passthe bolts for fastening the guard to the frame legs.

The upper section of the guard consists of a front member 15 and a rearmember 16 which are likewise hinged together at their mutually-adjacentends, the front member having its forward end disposed some distanceabove the plane of the upper face of the saw table, and bent slightlyupwards to provide the curved lip 17, said member being, however,pressed yieldingly downwards towards the table by the action of aleafspring 18 which is secured at its rear end to the member 16, both ofthe members of the upper guard sectionbeing U-shaped in cross-section,their sides 19 extending adjacent the opposite faces of the saw. Theouter edge of each side 19 is bent at right-angles to the bodyportionthereof, to form a flange 20, the mutually-adjacent end portions of saidflanges being held in contact with each other, under the action of thespring 18, thus, limiting the downward movement of the member 15. Therear member 16 of the upper guard section is further connected with theframe 10 by means of a pair of braces 21, which are disposed uponopposite sides thereof, each brace being made fast at its lower end tothe adjacent leg of the corresponding frame member, while its upper endis vertically slotted, as at 22, such slot registering with a bolt holeformed in a projection 23, disposed atthe forward end of each side 19 ofsaid member 16. Owing to this construction it will be apparent that theupper member of the guard is capable of a slight movement towards orfrom the lower member, and that it may be held in adjusted position bymeans of the fastening bolt 24 which extends through said slots andperforations and is provided at each end with a transverselyserratedwasher 25 which engages the correspondingly serrated upper end of theadjacent brace.

From the above description, it will be understood that the upper sectionof the guard may be raised and swung backwards upon its hinge, tocompletely uncover the saw, by merely withdrawing the fastening bolt 24,and it will be also understood that the front member of said sectionwill be swung upwardly and rearwardly upon its hinge, against the actionof the leaf-spring 18 when a log or slab of wood of extra thickness isfed to the saw from the carrier 26, the wood contacting with theupwardly curved lip 17. The carrier, as shown, comprises a beam 27,which, is hinged at its lower end to the adjacent frame legs and istherefore, movable in a vertical plane towards and from the saw. Towardsits upper end, this beam is provided with a pair of arms 28, so disposedthat when the carrier is swung into its vertical position the saw willpass between these arms, which are arranged in spaced relation to eachother, and at right-angles to said beam. Each arm, is, in turn providedat its free end with an upwardly projecting curved finger 29, which liesin the same vertical plane as the inner side edge of the correspondingarm. The lower ends of these fingers, and the forward ends of the armsto which they are secured will contact with the upper ends of theadjacent frame members, to prevent the saw teeth from injuring orbecoming injured by the carrier beam.

What is claimed, is,

.1. The combination, with a circular saw, of a saw frame comprising apair of spaced members between which the saw is mounted; a sawguardincasing the saw and consisting of an upper and a lower section, hingedtogether at their rear ends and having their forward ends spaced apartfrom each other; and a brace secured at one end to each member of theframe and adjust-ably connected at its opposite end with the adjacentside of the upper section of the guard.

12. The combination, with a circular saw, of a saw frame comprising apair of spaced members between which the saw is mounted; a saw-guardincasing the saw and consisting of an upper and a lower section, hingedto gether at their rear ends, and having their forward ends spaced apartfrom each other; the upper section being composed of a front member anda rear member hinged together at their mutually-adjacent ends, eachmember being U-shaped in cross-section; a spring secured at one end tothe rear member of said upper section, and hearing at its opposite endagainst the front member ther f, to press the latter yieldingly towardsthe lower guard section; and a brace secured at one end to each memberof the frame and adjustahly connected at its opposite end with theadjacent side of the rear member of the upper section of the guard.

The combination, with a circular saw, of a saw frame comprising a pairof spaced members between which the saw is mounted; a saw-guard incasingthe saw and consisting of an upper and a lower section, hinged togetherat their rear ends and having their forward ends spaced apart from eachother; the upper section consisting of a front member and a rear memberU-shaped in cross-section and hinged together at their inner ends, thefront member having its outer end bent upwardly to form a curved lip; aspring fastened at one end to said rear member and bearing at itsopposite end upon said front member, to press the latter yieldinglytowards the lower section of theguard; a brace secured at one end toeach member of the frame and adjustably connected at its opposite endwith the adjacent side of said rear member; and a vertically-movablecarrier hinged at its lower end to the frame and provided towards itsopposite end with a pair of spaced arms adapted to pass on opposite endsof the saw when the carrier is swung into its vertical posi tion.

4. The combination, with a circular saw, of a saw frame comprising apair of spaced members between which the saw is mounted; a saw-guardincasing the saw and consisting of an upper and a lower section hingedtogether at their rear ends and having their forward ends spaced apartfrom each other; a brace secured at one end to etch member of the frameand adjust-ably connected at its opposite end with the adjacent side 01'the upper section of the guard and a vertically-movable beam hinged atits lower end to the frame and provided towards its forward end with apair of spaced arms disposed at rightangles to the beam and adapted topass on opposite sides of the saw, when the beam is swung into itsraised position, each of said arms having an upwardlyprojecting curvedlinger located at its free end.

5. The combination, with a circular saw, of a saw frame comprising apair of spacedmembers between which the saw is mounted; a saw-guardincasing the saw and consisting of an upper and a lower section, hingedtogether at their rear ends and having their forward ends spaced apartfrom each other; the upper section being composed of a front member anda rear member hinged together at their mutually-adjacent ends, eachmember being Ushaped in cross-section; a spring secured at one end tothe rear member of said upper section, and hearing at its opposite endagainst the front member thereof, to press the latter yieldingly towardsthe lower guard section; a

brace secured at one end to each member of the frame and adjustablyconnected at its opposite end with the adjacent side of the rear memberof the upper section of the guard; and a vertically movable beam hingedat its lower end to the frame and provided towards its forward end witha pair of spaced arms disposed at right'angles to the beam and adaptedto pass on opposite sides of the saw when the beam is swung into itsraised position, each of said arms having an upwardly-projecting curvedfinger lo cated at its free end.

In testimony whereof, I aflix my signature, in presence of twowitnesses,

. MAURICE l. OREGAN.

Witnesses MARTIN MCLAUGHLIN, \VILLIAM Wlvrnus.

